11121200121011 has 4 divisors (see below), whose sum is σ = 11121225254472. Its totient is φ = 11121174987552.

The previous prime is 11121200121007. The next prime is 11121200121019. The reversal of 11121200121011 is 11012100212111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11121200121011 - 2² = 11121200121007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11121200121019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11890886 + ... + 12792011.

It is an arithmetic number, because the mean of its divisors is an integer number (2780306313618).

Almost surely, 2^{11121200121011} is an apocalyptic number.

11121200121011 is a deficient number, since it is larger than the sum of its proper divisors (25133461).

11121200121011 is an equidigital number, since it uses as much as digits as its factorization.

11121200121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25133460.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11121200121011 its reverse (11012100212111), we get a palindrome (22133300333122).

The spelling of 11121200121011 in words is "eleven trillion, one hundred twenty-one billion, two hundred million, one hundred twenty-one thousand, eleven".